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Is the following true or false the fates of many cells in the early embryo are not fixed?
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What statement regarding stem cells is false a. they form totipotent embryo b. can be induced to form tissues c. they are undifferentiated?
dsad
Is the following sentence true or false most white blood cells live for an average of 120 days?
False, red blood cells circulate for an average of 120 days before they are worn out from squeezing through narrow capillaries.
Is it true or false that the cell theory states that cells are produced from non-living cells?
It is false.
Heredity is the process by which sex cells from true ore false?
FALSE
True or false vacuoles are the powerhouses of the cells?
False. Vacuoles are larger in plant cells and their retention of water help with turgidity.
Is it a false pregnancy if the embryo does not develop?
If there was an actual embryo, it was not a false pregnancy.
What statement regarding stem cells is false a. they form totipotent embryo b. can be induced to form tissues c. they are undifferentiated?
dsad
Can a cow have more than one false heat?
Not usually, no. If she is having more than one "false" heat, chances are it's not false at all. She probably absorbed the embryo or aborted early and came back to heat soon after.
True or false personhood is legally defined as an eight-cell embryo?
False
Is it true that the embryo normally attaches to a fallopian tube?
No. That is false. Embryo normally get attached to uterine cavity. It is abnormal and dangerous for the embryo to get attached to fallopian tube.
Is the following true or false The ancestor of all eukaryotic cells evolved about 2 billion years ago?
Sort of false - it was about 1.5 billion years ago.
Is the following sentence true or false most white blood cells live for an average of 120 days?
False, red blood cells circulate for an average of 120 days before they are worn out from squeezing through narrow capillaries.
True or false human sperm and egg cells have 23 chromosomes?
True. Sperm and egg cells are gametes, and thus are necessarily haploid. These haploid gametes were created through the process of meiosis. When the two fuse to create an embryo, the new embryo will then have 46 chromosomes, the full number for a human. The embryo will receive one copy of each chromosome from each parent. If sperm and egg cells were to have the full set of 46 chromosomes, with both copies of each chromosome from each parent, then when they fused the embryo would have 92 chromosomes total. And the progeny of that embryo would have an even higher number of chromosomes. Having haploid gametes is necessary to maintain the stability of the species.
Is 9 dpo too early to test for a positive pregnancy test?
While early pregnancy testing is possible it often yields a false negative. In cases where fertility drugs are used it can yield a false positive. It is best to wait 14-16 days after ovulation, unprotected sex, or embryo transfer for the most accurate results.
Is the following sentence true or false besides the energy in sunlight the cells need water and carbon dioxide to make sugar?
That is correct.
Is it true or false that the cell theory states that cells are produced from non-living cells?
It is false.
Reproductive cells are called zygotes true or false?
false reproductive cells (also called germ cells) are egg & sperm when these reproductive cells fuse together, the zygote is formed
